even if they are buying local from breeders they are buying the castoffs that the breeder cant sell for more money his/herself so most snakes at a box pet store will not have the quality that you can find from a reputable breeder
I know this as I sell all my normals to a local pet store. I give him a great price on them and he can put a good price on them for his customers them. I dont have to worry about what to do with the 20 normals I hatched out. And I know where he gets his morph snakes from which is local breeders that sell him stock that they cant move because it is lesser quality. Now I am not saying this is always the case but it happens alot. As a breeder why would you sell a snake to a box store for say $50 when you can sell it via morph market or kingsnake for more if it was a nice animal? You wouldnt
and as eric said to be fair there are sometimes nice animals in box stores, wile I can not rebute this I still would not buy from one